How do you swap array elements in JavaScript efficiently?

Swap Array Elements in JavaScript

When manipulating arrays in JavaScript, the need often arises to swap the elements between two indices. While a common method involves using a temporary variable, there are more concise approaches.

Concise Element Swapping

Instead of utilizing two temporary variables, you can achieve element swapping with only one:

<code class="javascript">var b = list[y];
list[y] = list[x];
list[x] = b;</code>

ES6 Destructuring Assignment

For JavaScript versions ES6 and later, destructuring assignment provides an elegant solution:

<code class="javascript">[arr[0], arr[1]] = [arr[1], arr[0]];</code>

Applying this to an array like [1,2,3,4] yields [2,1,3,4].

By employing these concise methods, you can enhance the readability and efficiency of your code when swapping array elements in JavaScript.

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